No there is no code, to unlock all the items in the krypt you must find all 60 items found in Konquest. If you can't find all the items the first time, you are able to go through Konquest multiple times. If you can't find a few and you've gone through many times, ask which specifc items you can't find and somebody will probably reveal their locations

Dude i've tried all different websites and cheat sites but i've found nothing, but what i've herd is that on verses when the guy ses "finish him" or her, you simply pull off as many combos as you can and if it's the right one than fatality if not then bumer.

The actions needed to perform fatalities can't be found in the game, but if you look hard enough there probably a site that tells you what sequence is needed to perform specific fatality actions -Answer by:Deelow

Fire ur fire blast at the post with a blue circle in them and wait for shoa khan to get in the circle the n go to the fist sign and pound on it then it will shoot a beam at him. u will have to do this a couple of times

The fatalities are performed with a chain of specific button pushing. In the previous Mortal Kombats, a certain sequence was used for fatalities, but in Armageddon the sequences are used to make a unique fatality.
There is no code to unlock the whole krypt. You need to go through Konquest and find the items from characters. If you don't find all the items the first time through Konquest, you are able to go through Konquest multiple times, but don't spend all your money on things in the Krypt. Use the money found in konquest to buy items for the "Kreate a Karacter" mode.

A2:

U got a try diff. ways out of up-doun-left-&right example=doun doun up
not garented it will work!

Well if you are good and know good fatalites and attacks you could bet him

A2:

Fire ball the blue orbs so they glow, then the red circle will glow in the center of the room, and the green fist square on the floor infront of the circle glows and you fire stomp (or whatever thats called) the square and half his life goes in one shot, in two he is dead.

If you are on the left of someone and the person says finish him then you press right then left+A then right left+b right left + Y right left +x and keep repeting (if u want it to keep going use right left b last)